This network of narrow, medieval passages has the most delightful name.

Follow the original medieval paths that wind through this intriguing section of the city.

This 13th century castle is chock full of ghosts and impossibly rare cows.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.

Arthur, Merlin, and Guinevere are among the largest and oldest satellite dishes on the planet.

Perhaps the only prehistoric monument with its very own public bus stop.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

World's first "penitentiary," meant to be humane, drove men insane.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Only six people can sit inside this delightfully quaint sanctuary.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The only rotating bar in New Orleans has been slowly spinning since 1949.

The curiosities and wonders of pharmacy in a delightful historic building.

Belly up to the bar in Cowtown, don't forget to buy some boots.

New England's tallest light house stands on an island with a history of cannibalism and death.

The most photographed house in Maine looks good enough to eat.

The grave of Mary Nasson is shrouded by witchy legends.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.